City of Los Angeles Tests 48 Year Old T-Lock Protected Pipe and 72 Year Old Tile Lined Pipe
Abstract:The City of Los Angeles has removed a section of pipe from the La Cienega / San Ferndando Valley Relief Sewer after 48 years of service and performed testing on it to determine how its current condition. This pipe was protected by T-Lock and has been continually in service. Testing included compressive strength of the concrete, tensile strength and pull out resistance of the reinforcing steel, petrographic analysis of the concrete of the pipe at invert and springline. The T-Lock was tested for hardness, tensile strength, elongation at failure, and pull off resistance. Both the pipe and the T-Lock were found to be in excellent condition after 48 years of service.
Testing was also done on sections of pipe removed from the North Outfall Sewer after 78 years of service. This sewer was protected by clay tile liner. Compressive strength testing and petrographic analysis were performed on this sewer. Significant corrosion due to sulfate attack was found in this sewer.
Document Type: Research Article
Publication date: January 1, 2002
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